:root {
    --primary-color: #3498db;
    --secondary-color: #2980b9;
    --dark-color: #2c3e50;
    --light-color: #ecf0f1;
    --hover-color: #1abc9c;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: #f5f5f5;
}

.navbar {
    background-color: white;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--dark-color);
    font-weight: bold;
    font-size: 1.5rem;
}

.logo i {
    margin-right: 0.5rem;
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    list-style: none;
}

.nav-item {
    position: relative;
    margin-left: 1.5rem;
}

.nav-link {
    text-decoration: none;
    color: var(--dark-color);
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
}

.nav-link i {
    margin-right: 0.5rem;
}

.nav-link:hover {
    color: var(--hover-color);
    background-color: rgba(26, 188, 156, 0.1);
}

.active {
    color: var(--primary-color);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: white;
    width: 200px;
    border-radius: 4px;
    box-shadow: var(--shadow);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    transform: translateY(10px);
    z-index: 100;
}

.nav-item:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid #eee;
}

.dropdown-item:last-child {
    border-bottom: none;
}

.dropdown-item a {
    text-decoration: none;
    color: var(--dark-color);
    display: block;
    transition: all 0.2s ease;
}

.dropdown-item a:hover {
    color: var(--hover-color);
    padding-left: 5px;
}

.search-box {
    position: relative;
    width: 200px;
}

.search-input {
    width: 100%;
    padding: 0.5rem 1rem;
    border: 1px solid #ddd;
    border-radius: 20px;
    outline: none;
    transition: all 0.3s ease;
}

.search-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

.search-btn {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #777;
    cursor: pointer;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--dark-color);
    cursor: pointer;
}

.cta-button {
    background-color: var(--primary-color);
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 20px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.cta-button:hover {
    background-color: var(--secondary-color);
    color: white;
    transform: translateY(-2px);
}

/* 内容区域样式 */
.content {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 2rem;
    min-height: calc(100vh - 200px);
}

.page {
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

h1 {
    color: var(--dark-color);
    margin-bottom: 1rem;
}

p {
    color: #555;
    line-height: 1.6;
    margin-bottom: 1rem;
}

@media (max-width: 992px) {
    .nav-links {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 80%;
        height: calc(100vh - 70px);
        background-color: white;
        flex-direction: column;
        align-items: flex-start;
        padding: 2rem;
        transition: all 0.5s ease;
        box-shadow: var(--shadow);
    }

    .nav-links.active {
        left: 0;
    }

    .nav-item {
        margin: 1rem 0;
        width: 100%;
    }

    .dropdown-menu {
        position: static;
        width: 100%;
        box-shadow: none;
        opacity: 1;
        visibility: visible;
        display: none;
        margin-top: 0.5rem;
        transform: none;
    }

    .nav-item:hover .dropdown-menu {
        transform: none;
    }

    .mobile-menu-btn {
        display: block;
    }

    .search-box {
        display: none;
    }
}
.full-width-btn {
    padding: 24px 0;
    width: 100%;
    border: none;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--bg-color), #6b63ff);
    color: white;
    font-weight: 600;
    font-size: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.full-width-btn:hover {
    background: linear-gradient(135deg, var(--hover-color), #5a52e0);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.full-width-btn:active {
    transform: translateY(0);
}

.full-width-btn::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: rgba(255, 255, 255, 0.15);
    transform: rotate(45deg);
    transition: all 0.5s ease;
    opacity: 0;
}

.full-width-btn:hover::after {
    opacity: 1;
    top: -30%;
    left: -30%;
}
body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}
